Esso Supreme+ 99 RON Fuel

[richardfleming]

our local petrol station (esso) has 95ron and 97ron supreme unleaded - until today. The 97 is gone and replaced with 99ron.
our cars specify a preference for 98ron - which we've never had here - so I've used 97 or 95 and I can't tell any difference.

Question is, should we use the 99ron or not (put some in today and not noticed any difference either), is there any 'official' word on this?

I figure difference between 98 required and 99 available is minimal - and nil if it loses potency sitting in the tank for a week or two - but thought I'd ask the question in case there is some prevailing wisdom on this?

 

[Lancerlot]

Unsure about your question. 99 RON is a slightly higher octane and a better fuel, but you won't notice a radical difference. 95 RON is inferior and the ECU will adjust the ignition cycle to compensate and prevent detonation, so power will be reduced. In neither case should your engine life be affected.

Regards,

Clive

 

[richardfleming]

I think you're entirely correct - and my question was 'what's the official line' on this? as the book says 98 and mentions nothing about the new 99ron.

 

[TimG]

Just looked at my local Esso fuel offering and it too now sells 99Ron Supreme!

At least now I can take advantage of the PCGB Esso card!

 

[Lancerlot]

is there any 'official' word on this?

"Esso has announced the launch of its first 99 Octane fuel – Synergy Supreme+ 99. The new premium fuel will be available on forecourts nationwide from October 14, with the exception of 140 sites in the north west, which won’t have supply until next year.
The high-spec fuel fills a gap at the top end of Esso’s forecourt fuel line-up and gives retailers a product to challenge Shell’s V-Power unleaded. Currently the highest-spec Esso fuel available to the motorist is 97 RON.
The new fuel features three key attributes: higher octane levels, which are known to help prevent ‘knock’-related performance losses in modern cars; double detergent additives compared to Esso’s regular petrol, giving the engine a deeper clean, which helps improve performance and better fuel efficiency; the double protection additives include friction-reducing molecules that help an engine’s moving parts work more efficiently.
In a broad-ranging marketing programme that will cross digital and partnership channels as well as the forecourt, and includes humorous advertising films – one of which features F1 Red Bull driver Alex Albon – Esso will be targeting two different types of audience.
The first is the estimated 6.72 million performance achievers – a young, majority male segment, heavily engaged with vehicles, motoring and motorsport. They are tech-savvy and interested in innovations both within and outside the category. Esso knows they are typically V-Power customers, but are intent on coaxing them to try Synergy Supreme+ 99. Performance achievers are described as a niche set of customers who will be targeted on digital media and through Nectar channels.
Meanwhile forecourt messaging will target Esso’s ‘normal’ customers – referred to as ‘Charlie & Sarah’ – who are not too concerned about octane but need to be reassured that the new product is still going to give them the quality reassurance and care for their car that they want.
Oscar Scriva, Europe & Africa Fuels Programme manager at ExxonMobil, said: "We are delighted to be introducing Synergy Supreme+ 99 into the UK market, to help drivers make the most of their engine’s potential performance. With Synergy Supreme+ 99 we have put the ‘potent’ in potential performance!” "

Regards,

Clive

 

[salisbees]

In trying to answer the question, when I ask my OPC what fuel I should run my brand new cars(4) on the answer has always been " we always run ours on 95 Ron ". So the best answer must be, "there is no recommendation” as people will choose what they think is best for their way of using their cars.

 

[Wollemi]

The specified fuel to produce the published performance figures is 98 RON. A higher octane will do no harm but won’t deliver a benefit either.
Using 95 wont do harm either as the ECU will automatically adjust for the lower rated fuel engine performance will be reduced.
However when you put 98 or above after running on 95 you will not notice any immediate benefit as it takes about three tank fulls for the ECU to re-adjust to the correct fuel.

 

[Lancerlot]

" we always run ours on 95 Ron ".

If indeed that's the policy of an official Porsche Centre, it should be reported since it is grossly misleading its customers. Porsche's recommended fuel grade is 98 Ron and we are reminded of this both in the handbook and on the filler cover flap.

Also, IMHO there's no point investing a large sum in a high performance sports car and then not getting the best from it by using fuel of inferior quality.

Regards,

Clive

 

[Steve Foster]

Hi Clive,
For my sins I am also a member of the Staffs TVR car club. Would you mind if I shared your information on the new Esso Supreme fuel?
Thanks
Steve.

 

[Lancerlot]

You're welcome Steve,

It was taken from an online forecourt industry magazine, so I'm not sure how it stands on copyright, but it's publicity for the Esso brand, so I wouldn't have thought there would be a problem.

Regards,

Clive

 

[richardfleming]

ok, so the general consensus on this appears to be use the 99ron interchangeably with 98ron - unless you're an OPC in which case use the cheapest supermarket 95ron you can find

i've given 911 a drink of the the 99 meanwhile, thanks all.